The celestron astromaster 102az refractor telescope is a dual purpose telescope that is appropriate for both terrestrial and celestial viewing each astromaster model is capable of giving correct views of land and sky the sturdy yet simple astromaster altaz tripod means you can be set up in a couple of minutes and remain portable complete with two eyepieces and finderscope the astromaster series produces bright clear images of the moon and planets it is easy to see the moons of jupiter a